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  • SCR/SNCRÓ  

     SCRÓˇ(jin)飺

        xԴ߻߀ԭSelective Catalytic ReductionSCRָڴ߻߀ԭNH3“x”cеNOxɟo(w)o(w)ȾN2H2OxָڟÓ^(gu)ПÓ߻xԵ،NOx߀ԭ鵪еSO2OٵرSO3@ͽx ڲӴ߻ėlcĻW(xu)ضȞ900백ְ(hu )ڸߜ·ֽ߻ضȿԽ͵180-400 ߻һxTiO2wV2O5WO3 w䷽Ⅲ_

    SCRÓˇ̈D

     

        SCRˇϵyҪA찱߻ϵyϵyȽMҺ܇(ch)\Һރo(w)ˮҺă扺ȡQڃ޵Ĝضȣ20r(sh)1MPaҺ(jng)^(gu)l(f)ӟ鰱ͨ^(gu)pyM(jn)백⾏_ϡL(fng)Cͨ^(gu)cһһϡጰӷ̎(jng)ϡጵİͨ^(gu)ϵyЇM(jn)뵽cԭڴ߻еĵcl(f)W(xu)ͣ™zޕr(sh)ķǰOõ100%·ͨ^(gu)ʹ偠tBm\

    SCRÓg(sh)ԭ

        SCR԰߀ԭ԰ʢŴ߻Լ߀ԭҪķbеҪĴȾ֮һҪMɳɷһͶһı_93%Óͨһ߀鷴ɵˮ

        Ҫ߀(hu )a(chn)һЩк|(zh)еĶⷴ@к|(zh)߻@Щп߻ӿ췴ٶȵnjһ߀ԭ(zh)dz@(li)ԟ@Щ𵽺ܴ(g)ҪԴԴعܾSַmM(jn)

    SCRg(sh)ҪCӳM(jn)ͱҪSCR^ضȿ290430ض^(gu)^(gu)Ͷ^(gu)͕(hu )·@a(chn)YFM(jn)wڴ߻ʹ߻Ļض^(gu)߄t(hu )ɴ߻ߜ؟YM(jn)ʧÓЧ

     

    SCRÓϵyɣ


    SCRÓϵyҪMɲְ߻ϵyϵy߀ԭϵy߀ԭעϵy

    SCRw


    SCRwɷ֞释϶SCRÓЧcP(gun)߻|(zh)ضͣr(sh)gcϾ̶SCRȷ̶ֲ

    _^ߵÓЧOӋÿ(g)ܶΕr(sh)횿]ÿ(g)h(hun)(yu)OӋڱĿOӋM(jn)SCRϵyğضȞ300-400

    ʽSCRϷҪD900ǰHҲж(g)Ӱ푚ľֲbgСʹM(jn)߻ӵğֲÌӾŰʽ͸ŰCFDֵģMӋYM(jn)OӋCM(jn)߻ӵğپ̶<0.2

    ߻

    ĿǰõĴ߻ʽҪCʽͰʽ CʽĿǰЈ(chng)ռз~ߵĴ߻ʽc(din)džλweĴ߻Ը_ͬÓЧõĴ߻we^Сmϻҷֵ30g/m3ճ^Сğh(hun)

    ʽ߻Ј(chng)ռз~HڷCʽ߻ʽ߻ԽٰW(wng)Ǽȱe^С˷N߻c(din)ǣ^Ŀgͷmں߼ճ^ğh(hun)ȱc(din)džλweĴ߻Եdweʹõ䓽Y

    SCRhʽYSCRw¿ɲ3Ӵ߻3Ӵ߻2+1÷ʽڲöӴ߻AһӴ߻λһӞ߻(jng)^(gu)L(chng)r(sh)g\ÓЧ½o(w)_ŷҪAλٰbһӴ߻

    ߻xür(sh)gӰÓЧʵҪ鱣Cɹ(sh)ʩгɹØI(y)(j)Ĵ߻߻Ĕ񰴏S(chng)ҪM(jn)OӋm]߻ʹÉ24000Сr(sh)


    ȼú/ȼ偠tÓÓ̰

    ˇ̣SCRÓ+늳m+Ó

    γəC:

    úȼr(sh)γɵNOxɷ֞NNOxȼͺڻ߅γɵĿNOxNOxFenimoreC?zhun)һֻȼò̼ȼϕr(sh)迼]ҲǰɷNٵö

    NOxγʿɸZeldovichCM(jn)й了(jin):

    УB=5.74×1011m3/2/(mol1/2·s)E/R=66900K\Мضȷˮƽγʺܵʹ]Nֽ߀ԭ^(gu)ƽҲܵһҲԲ迼] 

    ȼϵγɵNOռȼʽNOxŷŵ95%o(w)ՓǓ]l(f)ȼ߀ǽ̿ȼAζγ˴NOȼ^(gu)̵ȼϵƽÈD1ʾȼϵDҪܜض^(gu)՚ϵȣȼϺӰһ10%-45%ķ

    |(zh)偠t̰

    ˇ̣SCRÓ+m+FGDÓ

    ÓÓԭ

    |(zh)偠tȼ|(zh)ȼȼȼ(hu )ŷŴĵﲻȾh(hun)߀(hu )wһĂÓָľȥе^(gu)

    |(zh)偠tÓҹ˾õSCRxԴ߻߀ԭg(sh)ڴ߻ͨ^(gu)Ӱ(NH3)԰NOxDɿ՚Ȼеĵ(N2)ˮNH3“xԵ”NOxDZ(O2)˷Q(chng)“x”

    Ҫʽ£

              4NO + 4NH3 + O2→4N2 + 6H2O

              6NO + 4NH3→5N2 + 6H2O

              2NO2 + 4NH3 + O2→3N2 + 6H2O

              6NO2 + 8NH3→7N2 + 12H2O

              NO + NO2 + 2NH3→2N2 + 3H2O

    ֮ڗl׃r(sh)߀ܰl(f)¸

              4NH3 + 3O2→2N2 + 6H2O

              4NH3 + 5O2→4NO + 6H2O

              2NH3→N2 + 3H2

              SO3 + 2NH3 + H2O→(NH4)2SO4

              SO3 + NH3 + H2O→NH4HSO4

    ÓÓЧR99.5%

    SO2NOXȨQ10mg/Nm3

    Óm<2000pa

    Һȣ1.5L/M3

    ѭh(hun)ˮ60m3/h

    ˮR3.0kg/cm2

    tÓÓ̰

    ˇ̣FGDÓ+m+SCRÓ

    tⱻL(fng)C빤ˇϵyÓSO2mÓÓwNOx(jng)L(fng)Ct(Ҋ(jin)D)

    ԓˇҪϵyMɣ

    ÓϵyÓÓҺƂϵyMNa2CO3Һͨ^(gu)obúҺ͵ÓFγFҺcSO2l(f)M(jn)ÓÓЧʿ_90%Ó򄩇bcϵyM(jn)SO2“(lin)iStSO2ȵ׃Ԅ(dng){Ó򄩇

    O韟mÓһwbϼһ(g)wȵijm϶κÓ

    ϵyؓ؟韟Óṩ߀ԭʹҺˮl(f)鰱ʹ

    ϵyؓ؟ÓbÃȵĴ߻ṩ380-400ߜؽwֽ𤸽     ڴ߻@߻

    ÓÓԭ

    ðɷÓˇʹNa2CO3ҺÓ仯W(xu)ʽ飺

              Na2CO3+SO2→Na2SO3+CO2(1)

              2Na2SO3+O2→2Na2SO4(2)

              ÓNH3-SCRڴ߻߀ԭNH3xԵcNOxɟo(w)ȾN2H2OSŷ仯W(xu)ʽ£

              4NO+4NH3+O2→4N2+6H2O (3)

    Ȼ偠tÓÓ̰

    ˇ̣Ó++՚A+o늳m

    ȻҪɷ֞Nмռ^ͬr(sh)Ҳ΢ĵs|(zh)ȻȼضȺܸ՚еĵڸߜؗlɵĵ

    SCRÓϵySCRϵy̎ϵyͰעϵy(g)ϵyM

    ˮϵyˮжϱˮ޵

    ˮעϵyl(f)⾏_ϡጲUˮ

    SCR͸ϵyɓT(mn)עSCR߻ϵy͟ȽM

    Ó֞ȼǰÓȼ^(gu)ÓȼÓ

    SCRÓg(sh)ڴ߻x߀ԭأNOX߀ԭo(w)ĵˮĿǰHϼg(sh)ÏVğÓg(sh)NOXÓЧ80-90%

    SNCRÓˇ(jin)飺

    SNCRÓg(sh)xԷǴ߻߀ԭSelective Non-Catalytic Reductionº(jin)(xi)SNCRg(sh)һNô߻8501100Ĝضȷ߀ԭ簱ˮҺȣtеNOx߀ԭÓɵˮ坍Óg(sh)

    ںmĜضȅ^Ұˮ߀ԭr(sh)䷴ʽ飺

    4NH3 + 4NO + O2→4N2 + 6H2O 1

    Ȼض^(gu)ߕr(sh)Ҳ(hu )l(f)¸

    4NH3 + 5O2→4NO + 6H2O2

    SNCRÓg(sh)ÓЧһ30%80%偠tYߴӰ푺ܴ

    SNCRg(sh)Ŀǰڅش氱߀ԭ

    SNCRÓԭ

    SNCR g(sh)Óԭ飺 

    8501100淶NH3߀ԭNOxҪ飺

    NH3߀ԭ:  

    4NH3 + 4NO +O2 → 4N2 + 6H2O

    ؞߀ԭ : 

    NO+CO(NH2)2 +1/2O2 → 2N2 + CO2 + H2O

    ضȸ1100r(sh), NH3t(hu )

    4NH3+5O2→4NO+6H2O

    ͬ߀ԭвͬķضȷ˜ضȷQ(chng)ضȴNH3ķќضȅ^ 8501100ض^(gu)ߕr(sh)ڰķֽ(hu )ʹNOx߀ԭʽһض^(gu)͕r(sh)Ҳ(hu )ʹNOx߀ԭʽNH3Ǹߓ]l(f)Ժж|(zh)ݕ(hu )µĭh(hun)Ⱦ

    SNCRϵyݵԭЃɷNһڇc(din)ضȵӰ˰cNOxķ;һNLJ߀ԭ^(gu)߀ԭֲ߀ԭϵy܌߀ԭ뵽tЧIJλNOxڠtŃȵķֲ(jng)׃c(din)̫ٻ򇊵tij(g)ϵİֲt(hu )Fֲ^ߵİ^ȼú偠t߀ԭľֲty^L(chng)ćxҪwஔĠtȽ鱣CÓֵܳM(jn)ٵćNH3_õ߀ԭЧOʹNH3cõػ

    SNCRÓϵyMɣ

     SNCRϵyҪжϵyޅ^Ӊüϵyϵyc{ϵyFϵyȽM 

     SNCRϵyÓ^(gu)Ă(g)^(gu)

      պ̓߀ԭ偠tmλעϡጺ߀ԭ

      ߀ԭӋݔcˮϡ?zhun)߀ԭcM(jn)Ó

    SNCRÓˇ̣

    SNCRÓc(din)

    1.ϵy(jin)ռeС

    2.ͶYɱ\Mõ

    3.mϸNȼϵ偠t

    4.ȫԄ(dng)ЧԄ(dng)ۙќضȅ^g;

    5.ģKĹoϵyʹϵyb;So(jin)

    6.÷Vmc½a(chn)(xin)a(chn)(xin)

         SNCRÓO䣺

    ˮDGÓ̰

    ˇҪ؃ܵݔӋ

    ˮDGÓg(sh):

    ͸ɷˮDGϿɲNOxƼg(sh)ҪŽ׷Nһǵ͵ȼg(sh)õNOxȼּȼ̓(yu)GͷֽtȼƶȵDzÿȼúĶNOxȻʹɷNʩȫʹ(li)Œ(sh)ˮGNOxŷźy_ŷŝßÓg(sh)-xԷǴ߻߀ԭSelective Non-Catalytic Reduction(jin)Q(chng)SNCRÓһ(g)dzЧĽNOxŷ;

    SNCRÓg(sh)ĿǰdzˮÓg(sh)HGtmԺһͶYMҲ^ˮИI(y)wr^ױˮa(chn)I(y)wϵy(li)Ҳ(jin)ռeС`ֻҪϵyOӋr(sh)ֿ]ØI(y)ʹ×lһЩĆ(wn)}̎SNCRÓg(sh)(hu )ИI(y)J

    ˮGNOXɣ

    ˮИI(y)ĻDGϟ^(gu)(hu )a(chn)кNOXNOXҪɷNONO2(NOsռ95%)ˮGNOXҪЃɷNγəC1NOX2ȼNOXˮa(chn)NOXŷҪȼs1500~2600mg/Nm3;ȼNOXȼs800~1300mg/Nm3ƽs1100mg/Nm3

    DGÓ

     

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